Stack-cleaner.



-I To all/whom `z'z may concern.'

DUJo rtavsa.' or BUTTE, MONTANA.

applicati@ med July 9, 1917. 'serial Nn. 179,449.

Be it known that I, DUJo PLAvsA, a sub-V ect of the King of Hungary, residing at utte, in the county of Silverbow and State ofMontana, have, invented certain new and useful Improvements in Stack-Cleaners, of

' which the following is a specification.

y This invention relates to new and useful im' rovements 1n stack cleaner.

el primary object of the invention is' Y the provision of a cleaner for stacks, such as provide a device that is easy and inex' ensive Y stove'pipes and fines, the saine being automatically operated by the action of the wind when the device is installed upon the stack.

A further object of the device is the pro'- vison of yan attachment for stove pipes 'vertically arranged for the outlet of the prod` ucts of combustion, 4the action of the wind being utilized for'shifting both vertically and rotarily acleaning member within the pipe. i `A still further object ofthe invention is to to manufacture for ,automatically c eaning a iue or stack and which may be readily attached in its operative position upon any` y. circular stack which is already in use,

In the drawing forming a part of this application,' and in which like reference characters designate correspondingparts throughout the several views l'ses Figure `1 is a central vertical sectional View taken through a stack provided with Vthe present device, l

-'F1g. 2 is 'a horizontal transverse sectional view taken upon line II-II of Fig. 1, Fig. 3 is a similar view III-III of Fig. 1 and e l Fig. 4 is an enlarged detail sectional view of thefollower employed with the device.`

Referrin more 1n detail to the drawing,

a brickstac 10 is illustrated having'a cylindrical metal pipe or stack 11 mounted upright thereon and forming the outlet for the products of combustion from the main stack 10. A spider 12 issecured inthe upper end of the stack 11 while abracket 13 is secured adjacent the bottom thereof, a shaft 14 being.

centrally journaled through thesaid spider and bracket axially of the stack. A circular ,ribn 15 is arranged upon the bracket y13 having a turntable or disk 16 revolubly mounted thereon upon ball bearings 17, while a ring 18 is carried bythe rib 15 overlying the edge portion of said disk for retaining the same in its shiftable Specication of Letters Patent.

2O is constantly engaged,thesaidfroller 'taken upon line `Patent-er1' Dee. 191,11 7

upon the disk ,16 withV which 'aball' ing journaled upona; radially 4Plraftng arm 21 carried by the shaft 14.'

' arrangement. A circular cam-19 is Al plate 22 in the form of a weather vane' 14 above `the stack l1 whereby the shaft 14 is rotated during the action of the wind during the changesln thedirection 0f the wind, and this action permits the roller20 to move upwardly upon the cam 19 when the shaft 14 isviolently turned asby a sudden gust of' wind. The shaft 14 freely revolves in the spider 12 and bracket 13 through which the same is journaled while the disk 16 will at times revolve therewith andat other times 'lis mounted upon the upperend of the shaft the disk will remain stationary all of which depends upon the variableness of the wind.

A plurality of Scrapers 23 are vertically' arranged adjacent the sides of the stack 10, the same. bein inthe form of elongated strips preferab y semi-circular in cross-sec#l tion, each of the Scrapers being mounted upon'a pair of larms 24 radially projecting V from the shaft 14. VIt will be obvious that any desired number of Scrapers 23 may be lso employed, carried bythe shaft 14 .at any desirable angularity and which being in substantial'contact with the flue 11 will operate` thereon during the turning of the shaft 14. The complete operation of the devicexwill bc readily apparent from this detai1ed-description thereof it being noted that the ele-- vating and lowering ofthe shaft 14 which so,A f e takes place when the roller 20 of the arm 21 rides up and down on the cam 19 will shift the different Scrapers 23 longitudinally of the stack 11 whereby the same will operate in Vdifferent planes and upon differentsurfacesof the stackfduringf'the rotation of the v shaft.' A serviceable stack cleaner is j arranged which is entirely operable by the action of the wind and is calculated `to maintain the vkstackgfree-from soot and other accumulations. While the present form*l of they invention is preferable, minor changes may -be ,madey therein without departlng from the spirit and scopeof the appended claims A YVhat I claim asnew is 1. A cleaner comprising in combination with a cylindrical stack, a scraper shaftjourf naled axially thereof, a weather vaneprojecting from said shaft exteriorly of the stack and means adapted for imparting longitudinal movementto the shaft during the rotation thereof.

2.'A cleaner comprising in combination with a cylindrical stack, u scraper shaft axially journaled therethrough, n Weather vane secured to said shaft exterior-ly ofthe stack a Cam revolubly mounted mneentrio With said shaft and means carried by the sha-ftV engaging the said ezun whereby the shaft is adapted for longitudinal niovelnent `during the rotation thereof.

3. A device of the Class described compris-v ing a cylindrical stack, a spider secured adjacent the top thereof, a bracket secured adjacent, the bottom of the stack, a. shaftcentrally journaled through the said spider and bracket, a Wind-engaging plate upon the upper end of said shaft Scrapers upon said shaft in substantial Contact With the sides of the stack, n disk nntifrictionall)vv journuled upon said bracket' and through which said shaft freely extends, a circular @and upon said disk concentric With'the shaft, an arm -upon the shaft, and a roller journaled upon the said arm positioned and adapted for traveling upon the said cam.

DUJO PLAVSA. Witnesses BoB BACALICH, GEORGE V. L SAGE. 

